Improvement in shuttle for sewing-machines



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ALBIN WARTH, Ol" STAPLE'IONQNEW YORK, ASSIGNOR TO HIM SELF ANDEBERI-IARD FABER.

Letters Patent No. 85,040, (lated December 15, 1868.

IMPROVEMENT IN SHUTTLE FOR SEWING-MACHINES.

The Schedule referred to thse Letters Patent and making part of thesame.

To all whom it may concern:

Be it known that L ALBIN Wsn'rrnbf Stapleton, in the county of Richmond,and State of New York, hate invented a new and useful Improvement inShuttles for sewingdtachines; and I do hereby declare the following tobe a full, clear, and exact description thereof, which will enable thoseskilled in the art to make and use the same, reference being had to theaccompanying drawing, forming part of this specification, in whichdrawiug- Figures 1 and 2 represent my improvement as applied to ashuttle, such as described in Letters Patent granted to me, May 29,1866, the shuttle being shown in diierent positions.

'- Y Figures 3 and 4 are similar views, showing the application of mypresent improvement Vto a common shuttle.

Figure 5 is a transverse section ofthe shuttle.

Similar letters indicate corresponding parts.

This invention consists in the'arrangement of' a shoulder and projectingliange on the back of a shuttie, in such a manner that when the shuttleretreats, said shoulder carries theshuttle-thread back out of the Way ofthe descending needle, and by the ange the thread is retained in such aposition that it cannot form a loop, and .that the needle, on itsdescent, will' not become entangled in the shuttle-thread, therebyavoiding the formation of knots.

A represents" a sewing-machine shuttle of any dc- When the shuttle hasarrived at the forward end of its'stroke, as shown in figs. 1 and 3, theshuttlethread extends from the eye c to the throat under the fiange l),and behind the shoulder a, as indicated by red dotted lines.

When the shuttle retreats, `the slack ofthe shuttlethread is carriedback bythe shoulder a, and said thread is retained under the flange b,so that itis prevented from forming a loop, or from assuming such aposition that theneedlc, in its descent, will be liable to becomeentangled therewith, and thereby the formation of knots is efiiectuallyprevented.

When the shuttle advances lto the position shown in figs., 2 and 4, theshuttle-thread is still retained under the flange, and it is carriedthrough the loop of the and, iilrthermore, people-are liable to takehold of the' spi-ing, in lifting out the shuttle, and bend or break thesaine. I

My shoulder and flange are firm, and cannot be displaced, and theiraction is absolutely certain.

It must be remarked that either the shoulder or lflange can be dispensedwith, but by using both combined, the desired effect is producedwithmore certainty than by using either of them alone.

In tig. 3, I have also shown a modification of the open tension-pins@which I have described in Letters Patent granted to me, January 7,1868. Instead ot' placing these pins in the interior of the shuttle, IcaiI form them in the body ofthe shuttle, without changing the result.

Having thus described my invention,

l/Vhat I claim as new, and desire to secure by Letters Patent, is-a Thecombination, with the shuttle, of the projecting ila-nge b and shouldera, arranged and operating sub- Witnesses 'W. HAUFF, E.' F. KASTENHUBER.

